It's not pizza, but it is a gluten free, vegetable thing that will remind you of pizza. This is perfect if you have any zucchini-zillas growing in your garden. The wider the zucchini, the better. I think this would also be great using portobello mushroom caps instead. (Or in addition, you could mix and match your veggies!)
Zucchini Pizza Bites
1 large, mega zucchini, cut into 3/4" slices
s + p
1 cup tomato sauce
1 - 1 1/2 cup shredded mozzarella cheese
Toppings: olives, onion, pepperoni...
Heat oven to 375 degrees. Brush both sides of zucchini slices with olive oil. Season with salt and pepper. Arrange on baking tray. Place in oven and cook 12 minutes.
Remove from oven and top with sauce, cheese and desired toppings. Return to oven and bake 10 minutes more.